Anna Lindroos, January-April 2009, University of Kalmar, Sweden.

Anna Kuparinen, January-May 2009, University of Potsdam, Germany.

Anna Kuparinen, 9.9.-9.12.2009, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Germany.

Piia Leskinen, October 12-16, 2009, Umeå University, Sweden.

Anna Lindroos, October 12-16, 2009, Umeå University, Sweden

Anna Lindroos, May 3-21, 2010, Umeå University, Sweden